CO2 capture using a superhydrophobic ceramic membrane contactor

The wetting and fouling of a membrane contactor deteriorated performance of the membrane gas absorption system for CO 2 post-combustion capture in coal-fired power plants. To solve these problems, in this study, a superhydrophobic ceramic (SC) membrane contactor was fabricated from an alumina tube with a ZrO 2 layer by means of grafting with fluoroalkylsilane (FAS) in a triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane solution. The performances of the SC membrane contactor and polypropylene (PP) hollow fiber membrane contactor were compared through experiments conducted in a CO 2 absorption experimental system using a monoethanolamine (MEA) aqueous solution. Although the membrane fabrication cost per effective membrane area (CPA) of the SC membrane is 12.5 times that of the PP hollow fiber membrane, the SC membrane fabrication cost per absorbed CO 2 flux (CPC) was lower than that of the PP membrane. For the SC membrane, the detrimental effect of wetting can be alleviated by periodic drying to ensure a high CO 2 removal efficiency (>90%). Drying does not work for the PP membrane because the swelling of the PP fibers is irreversible. The SC membrane contactor exhibited a better anti-fouling ability than the PP membrane contactor because the superhydrophobic surface can self-clean. To ensure a continuous, high-efficiency CO 2 removal, a method was proposed in which two-hollow fiber SC membrane contactors operate alternately with the addition of periodic drying. The SC hollow fiber membrane contactor shows great potential in real industrial CO 2 post-combustion capture because of its good anti-wetting and anti-fouling features.

[1]  Geert Versteeg,et al.  CO2 absorption at elevated pressures using a hollow fiber membrane contactor , 2004 .

[2]  Mj Martin Tuinier,et al.  Cryogenic CO2 capture using dynamically operated packed beds , 2010 .

[3]  Paul F. Nealey,et al.  Using Self-Assembled Monolayers Exposed to X-rays To Control the Wetting Behavior of Thin Films of Diblock Copolymers , 2000 .

[4]  Imona C. Omole.  Hollow-fiber membrane contactors , 1999 .

[5]  Mohamed Khayet,et al.  A framework for better understanding membrane distillation separation process , 2006 .

[6]  William J. Koros,et al.  Ceramic membrane characterization via the bubble point technique , 1997 .

[7]  Rong Wang,et al.  Theoretical and experimental studies of membrane wetting in the membrane gas–liquid contacting process for CO2 absorption , 2008 .

[8]  Chusheng Chen,et al.  Preparation and characterization of silicon nitride hollow fiber membranes for seawater desalination , 2014 .

[9]  Paitoon Tontiwachwuthikul,et al.  Using polypropylene and polytetrafluoroethylene membranes in a membrane contactor for CO2 absorption , 2006 .

[10]  Guoying Zhao,et al.  Carbon dioxide adsorption on mesoporous silica surfaces containing amine-like motifs , 2010 .

[11]  H. A. Rangwala.  Absorption of carbon dioxide into aqueous solutions using hollow fiber membrane contactors , 1996 .

[12]  A. Ismail,et al.  Effect of additives on the structure and performance of polysulfone hollow fiber membranes for CO2 absorption , 2010 .

[13]  D. T. Liang,et al.  Impact of DEA solutions with and without CO2 loading on porous polypropylene membranes intended for use as contactors , 2004 .

[14]  M. Mavroudi,et al.  Reduction of CO2 emissions by a membrane contacting process$star;*1 , 2003 .

[15]  E. Dahlquist,et al.  Fabrication and characterization of superhydrophobic polypropylene hollow fiber membranes for carbon dioxide absorption , 2012 .

[16]  Ludger Blum,et al.  A parametric study of CO2/N2 gas separation membrane processes for post-combustion capture , 2008 .

[17]  Matthias Wessling,et al.  Highly permeable and mechanically robust silicon carbide hollow fiber membranes , 2015 .

[18]  Kang Li,et al.  Use of permeation and absorption methods for CO2 removal in hollow fibre membrane modules , 1998 .

[19]  Gustavo Capannelli,et al.  CO2 removal from a gas stream by membrane contactor , 2008 .

[20]  A. Ismail,et al.  Hollow fiber gas-liquid membrane contactors for acid gas capture: a review. , 2009, Journal of hazardous materials.

[21]  Kefa Cen,et al.  Experimental study on the separation of CO2 from flue gas using hollow fiber membrane contactors without wetting , 2007 .

[22]  Erik Dahlquist,et al.  Wetting of polypropylene hollow fiber membrane contactors , 2010 .

[23]  Solvent distillation by ceramic hollow fibre membrane contactors , 2008 .

[24]  Kang Li,et al.  Preparation and characterization of hydrophobic ceramic hollow fibre membrane , 2007 .

[25]  A. Barbe.  Surface morphology changes during initial usage of hydrophobic, microporous polypropylene membranes , 2000 .

[26]  Sally M. Benson,et al.  Carbon Dioxide Capture and Storage: An Overview With Emphasis on Capture and Storage in Deep Geological Formations , 2006, Proceedings of the IEEE.

[27]  Kang Li,et al.  Carbon dioxide stripping in ceramic hollow fibre membrane contactors , 2009 .

[28]  Huanting Wang,et al.  Hydrophobic porous alumina hollow fiber for water desalination via membrane distillation process , 2012 .

[29]  R. Paterson,et al.  Preparation and properties of surface modified ceramic membranes. Part III. Gas permeation of 5 nm alumina membranes modified by trichloro-octadecylsilane , 1996 .

[30]  Hiroyo Matsumoto,et al.  CO2 removal by hollow-fiber gas-liquid contactor , 1995 .

[31]  Rong Wang,et al.  Influence of membrane wetting on CO2 capture in microporous hollow fiber membrane contactors , 2005 .

[32]  X. Tan,et al.  Highly stable La0.6Sr0.4Co0.2Fe0.8O3−δ hollow fibre membrane for air separation swept by steam or steam mixture , 2015 .

[33]  Erik Dahlquist,et al.  Effects of SO2 on CO2 capture using a hollow fiber membrane contactor , 2013 .

[34]  George P. Sakellaropoulos,et al.  A study of mass transfer resistance in membrane gas–liquid contacting processes , 2006 .

[35]  Rong Wang,et al.  Effect of membrane structure on mass-transfer in the membrane gas–liquid contacting process using microporous PVDF hollow fibers , 2006 .

[36]  S. Ayatollahi,et al.  Analysis of CO2 separation and simulation of a partially wetted hollow fiber membrane contactor. , 2008, Journal of hazardous materials.

[37]  P. Wilderer,et al.  Ceramic membranes for ozonation in wastewater treatment , 2001 .